Adjustable Weight Firearm Buffer

ABSTRACT

This invention is a serviceable buffer for an AR-type rifle such as the AR-15. This invention satisfies the need for the user to adjust said buffer weight by opening the buffer housing and adding or removing internal weights to achieve the desired recoil effect. In order for the firearm to function properly, buffer weight is a critical factor in the ejecting of the spent shell casings from the firing chamber and cycling of the firearm.

CROSS-REFERENCE TO RELATED APPLICATION

This application is claiming benefit from the previously filed provisional patent application with the application Ser. No. 61/754,301 with a filing date of Jan. 18, 2013

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an isometric view of the exploded representation of an embodiment of the invention illustrating the internal components.

FIG. 2 shows a top view of an embodiment of the invention.

FIG. 3 shows a cross section view of an embodiment of the invention showing the internal components.

FIG. 4 shows partial cutaway of an embodiment of the invention installed within the butt stock of an intended AR-type firearm.

FIG. 5 shows a close-up cutaway of an embodiment of the invention installed within the butt stock of an intended AR-type firearm.

DETAILED DESCRIPTION OF THE INVENTION

The following detailed description is of the best currently contemplated modes of carrying out exemplary embodiments of the invention. The description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention, since the scope of the invention is best defined by the appended claims.

Broadly, an embodiment of the present invention generally provides a method for changing out the internal weights of a carbine-type buffer or rifle-type for an AR-type firearm. It is necessary for the user to optimize the buffer weight for the purposes of assisting in the ejection of spent shell casings from the firing chamber and cycling of the firearm.

FIG. 1 shows an isometric view of the exploded representation of an embodiment of the invention illustrating the internal components. The invention may include a buffer housing (1) with an internal female thread, internal weights (2), buffer cap (3) with a male thread portion, roll pin (5) and bumper plug (4). In this embodiment, the bumper plug (4) and buffer cap (3) are joined together using a roll pin (5) which is intended to be a permanent mating. The user then selects the necessary internal weights (2) to achieve the desired recoil effect and inserts said weights into the internal cavity of the housing (1). The threaded housing (1) and buffer cap (3) are then joined to one another by way of a threaded interface which completes the assembly.

FIG. 2 shows an assembled top view of an exemplary embodiment of the invention. The invention may include a buffer housing (1) joined to the buffer cap (3) by way of a threaded connection, a bumper plug (4) joined to the buffer cap (3) by the insertion of a roll pin (5). In this embodiment, the bumper plug (4) and buffer cap (3) are joined together using the roll pin (5) which is intended to be a permanent mating.

FIG. 3 shows a cross section view of an embodiment of the invention showing the internal components. The buffer housing (1) is shown mated with the buffer cap (3) and the internal weights are enclosed within the buffer housing (1). The roll pin (5) is installed into the bumper plug (4) and buffer cap (3) via concentric radial voids.

FIG. 4 shows partial cutaway of an embodiment of the invention installed within the butt stock of an intended AR-type firearm. This illustration is intended to show the placement of buffer assembly (6) within the butt stock (8) of the rifle. The buffer assembly (6) is held in the forward position of the rifle by the buffer tube (7).

FIG. 5 shows a close-up cutaway of an embodiment of the invention installed within the butt stock of an intended AR-type firearm. This illustration shows the installation of the buffer assembly (6) within the buffer tube (9) and being supported in the forward position by way of the buffer spring (7). The buffer tube (9) is an internal cylindrical cavity within the butt stock (8)

In an exemplary embodiment, the device may be used with all types of firearms that utilize an internal buffer mechanism for the purpose of reducing recoil effects and cycling of the firearm.

It should be understood, of course, that the foregoing relates to exemplary embodiments of the invention and that modifications may be made without departing from the spirit and scope of the invention as set forth in the following claim. 

1. An adjustable buffer assembly for a firearm that may include the following: a hollow housing with an internally threaded opening on one end; a series of internal weights that are housed inside the housing; a threaded strike face portion that attaches to the housing to contain said weights; a roll pin; and a plastic or rubber bumper.
 2. An adjustable buffer assembly for a firearm as described in claim 1 in which the hollow housing and the threaded strike face portion are joined together by a threaded interface.
 3. An adjustable buffer assembly for a firearm that may include the following: a hollow housing with an internally threaded opening on one end; a series of internal weights that are housed inside the housing; a threaded tail cap that attaches to the housing to contain said weights; a roll pin; and a plastic or rubber bumper.
 4. An adjustable buffer assembly for a firearm as described in claim 3 in which the hollow housing and the threaded tail cap are joined together by a threaded interface. 